AU5822100A - Controlled antenna diversity - Google Patents

Controlled antenna diversity

Info

Publication number
AU5822100A
AU5822100A AU58221/00A AU5822100A AU5822100A AU 5822100 A AU5822100 A AU 5822100A AU 58221/00 A AU58221/00 A AU 58221/00A AU 5822100 A AU5822100 A AU 5822100A AU 5822100 A AU5822100 A AU 5822100A
Authority
AU
Australia
Prior art keywords
diversity
antenna diversity
controlled antenna
base band
processing circuit
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Abandoned
Application number
AU58221/00A
Inventor
Torsten Carlsson
Kjell Gustafsson
Torgny Palenius
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Telefonaktiebolaget LM Ericsson AB
Original Assignee
Telefonaktiebolaget LM Ericsson AB
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Telefonaktiebolaget LM Ericsson AB filed Critical Telefonaktiebolaget LM Ericsson AB
Publication of AU5822100A publication Critical patent/AU5822100A/en
Abandoned legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B7/00—Radio transmission systems, i.e. using radiation field
    • H04B7/02—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas
    • H04B7/04—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas
    • H04B7/08—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas at the receiving station
    • H04B7/0868—Hybrid systems, i.e. switching and combining
    • H04B7/0874—Hybrid systems, i.e. switching and combining using subgroups of receive antennas
    • H04B7/0877—Hybrid systems, i.e. switching and combining using subgroups of receive antennas switching off a diversity branch, e.g. to save power
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L1/00—Arrangements for detecting or preventing errors in the information received
    • H04L1/02—Arrangements for detecting or preventing errors in the information received by diversity reception
    • H04L1/06—Arrangements for detecting or preventing errors in the information received by diversity reception using space diversity
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B7/00—Radio transmission systems, i.e. using radiation field
    • H04B7/02—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas
    • H04B7/04—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas
    • H04B7/08—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas at the receiving station
    • H04B7/0802—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas at the receiving station using antenna selection
    • H04B7/0805—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas at the receiving station using antenna selection with single receiver and antenna switching
    • H04B7/0808—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas at the receiving station using antenna selection with single receiver and antenna switching comparing all antennas before reception
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L1/00—Arrangements for detecting or preventing errors in the information received
    • H04L1/0001—Systems modifying transmission characteristics according to link quality, e.g. power backoff
    • H04L1/0023—Systems modifying transmission characteristics according to link quality, e.g. power backoff characterised by the signalling
    • H04L1/0025—Transmission of mode-switching indication
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L1/00—Arrangements for detecting or preventing errors in the information received
    • H04L1/0001—Systems modifying transmission characteristics according to link quality, e.g. power backoff
    • H04L1/0036—Systems modifying transmission characteristics according to link quality, e.g. power backoff arrangements specific to the receiver

Abstract

A mobile station with a receiver having antenna diversity where the diversity processing is controlled from the base band processing circuit and only turned on when the performance gain justifies extra power consumption. The base band processing circuit may be instructed by the network that it can cease diversity reception after evaluating cell leads within a system.
AU58221/00A 1999-07-07 2000-06-29 Controlled antenna diversity Abandoned AU5822100A (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
US09/348,494 US7024168B1 (en) 1999-07-07 1999-07-07 Controlled antenna diversity
US09348494 1999-07-07
PCT/EP2000/006085 WO2001005088A1 (en) 1999-07-07 2000-06-29 Controlled antenna diversity

Publications (1)

Publication Number Publication Date
AU5822100A true AU5822100A (en) 2001-01-30

Family

ID=23368279

Family Applications (1)

Application Number Title Priority Date Filing Date
AU58221/00A Abandoned AU5822100A (en) 1999-07-07 2000-06-29 Controlled antenna diversity

Country Status (11)

Country Link
US (1) US7024168B1 (en)
EP (1) EP1197025B1 (en)
JP (1) JP2003504957A (en)
CN (1) CN1171412C (en)
AT (1) ATE422122T1 (en)
AU (1) AU5822100A (en)
DE (1) DE60041492D1 (en)
HK (1) HK1049559B (en)
IL (2) IL147482A0 (en)
PL (1) PL352279A1 (en)
WO (1) WO2001005088A1 (en)

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Also Published As

Publication number Publication date
US7024168B1 (en) 2006-04-04
PL352279A1 (en) 2003-08-11
DE60041492D1 (en) 2009-03-19
IL147482A (en) 2007-03-08
ATE422122T1 (en) 2009-02-15
HK1049559B (en) 2005-05-27
HK1049559A1 (en) 2003-05-16
WO2001005088A1 (en) 2001-01-18
EP1197025B1 (en) 2009-01-28
JP2003504957A (en) 2003-02-04
CN1373951A (en) 2002-10-09
EP1197025A1 (en) 2002-04-17
IL147482A0 (en) 2002-08-14
CN1171412C (en) 2004-10-13

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Legal Events

Date Code Title Description
MK6 Application lapsed section 142(2)(f)/reg. 8.3(3) - pct applic. not entering national phase